+/*****************************************************************************
+ * Copyright (C) 2010 by Peter Penz <peter.penz@gmx.at> *
+ * *
+ * This library is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU Library General Public *
+ * License version 2 as published by the Free Software Foundation. *
+ * *
+ * This library is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
+ * Library General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU Library General Public License *
+ * along with this library; see the file COPYING.LIB. If not, write to *
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
+ * Boston, MA 02110-1301, USA. *
+ *****************************************************************************/
+
+#include "kmetadatamodel.h"
+
+#include <kfileitem.h>
+#include "kloadmetadatathread_p.h"
+#include <kurl.h>
+
+class KMetaDataModel::Private
+{
+
+public:
+ Private(KMetaDataModel* parent);
+ ~Private();
+
+ void slotLoadingFinished();
+
+ QList<KFileItem> m_fileItems;
+#ifdef HAVE_NEPOMUK
+ QMap<KUrl, Nepomuk::Variant> m_data;
+
+ QList<KLoadMetaDataThread*> m_metaDataThreads;
+ KLoadMetaDataThread* m_latestMetaDataThread;
+#endif
+
+private:
+ KMetaDataModel* const q;
+};
+
+KMetaDataModel::Private::Private(KMetaDataModel* parent) :
+ m_fileItems(),
+#ifdef HAVE_NEPOMUK
+ m_data(),
+ m_metaDataThreads(),
+ m_latestMetaDataThread(0),
+#endif
+ q(parent)
+{
+}
+
+KMetaDataModel::Private::~Private()
+{
+}
+
+KMetaDataModel::KMetaDataModel(QObject* parent) :
+ QObject(parent),
+ d(new Private(this))
+{
+}
+
+KMetaDataModel::~KMetaDataModel()
+{
+ delete d;
+}
+
+void KMetaDataModel::Private::slotLoadingFinished()
+{
+#ifdef HAVE_NEPOMUK
+ // The thread that has emitted the finished() signal
+ // will get deleted and removed from m_metaDataThreads.
+ const int threadsCount = m_metaDataThreads.count();
+ for (int i = 0; i < threadsCount; ++i) {
+ KLoadMetaDataThread* thread = m_metaDataThreads[i];
+ if (thread == q->sender()) {
+ m_metaDataThreads.removeAt(i);
+ if (thread != m_latestMetaDataThread) {
+ // Ignore data of older threads, as the data got
+ // obsolete by m_latestMetaDataThread.
+ thread->deleteLater();
+ return;
+ }
+ }
+ }
+
+ m_data = m_latestMetaDataThread->data();
+ m_latestMetaDataThread->deleteLater();
+#endif
+
+ emit q->loadingFinished();
+}
+
+void KMetaDataModel::setItems(const KFileItemList& items)
+{
+ d->m_fileItems = items;
+
+#ifdef HAVE_NEPOMUK
+ QList<KUrl> urls;
+ foreach (const KFileItem& item, items) {
+ const KUrl url = item.nepomukUri();
+ if (url.isValid()) {
+ urls.append(url);
+ }
+ }
+
+ // Cancel all threads that have not emitted a finished() signal.
+ // The deleting of those threads is done in slotLoadingFinished().
+ foreach (KLoadMetaDataThread* thread, d->m_metaDataThreads) {
+ thread->cancel();
+ }
+
+ // create a new thread that will provide the meeta data for the items
+ d->m_latestMetaDataThread = new KLoadMetaDataThread(this);
+ connect(d->m_latestMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
+ d->m_latestMetaDataThread->load(urls);
+ d->m_metaDataThreads.append(d->m_latestMetaDataThread);
+#endif
+}
+
+KFileItemList KMetaDataModel::items() const
+{
+ return d->m_fileItems;
+}
+
+#ifdef HAVE_NEPOMUK
+QMap<KUrl, Nepomuk::Variant> KMetaDataModel::data() const
+{
+ return d->m_data;
+}
+
+QMap<KUrl, Nepomuk::Variant> KMetaDataModel::loadData() const
+{
+ return QMap<KUrl, Nepomuk::Variant>();
+}
+#endif
+
+#include "kmetadatamodel.moc"
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